package com.heima.article.service.impl;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleConfigMapper;
import com.heima.article.mapper.ApArticleContentMapper;
import com.heima.article.mapper.ApArticleMapper;
import com.heima.article.mapper.AuthorMapper;
import com.heima.article.service.ApArticleService;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.article.dtos.ArticleHomeDto;
import com.heima.model.article.dtos.ArticleInfoDto;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.article.pojos.ApArticleConfig;
import com.heima.model.article.pojos.ApArticleContent;
import com.heima.model.article.pojos.ApAuthor;
import com.heima.model.common.constants.ArticleConstants;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Service
@Transactional
@Slf4j
public class ApArticleServiceImpl extends ServiceImpl<ApArticleMapper, ApArticle> implements ApArticleService {
    @Value("${file.oss.web-site}")
    private String webSite;

    @Autowired
    AuthorMapper authorMapper;

    @Autowired
    ApArticleConfigMapper apArticleConfigMapper;
    @Autowired
    ApArticleContentMapper apArticleContentMapper;

    @Autowired
    KafkaTemplate kafkaTemplate;

    /**
     * 保存app文章
     * @param articleDto
     * @return
     */
    @Override
    public ResponseResult saveArticle(ArticleDto articleDto) {
        // 参数检查
        if (articleDto == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //1 保存article 文章数据， 设置作者id
        ApArticle apArticle = new ApArticle();
        BeanUtils.copyProperties(articleDto, apArticle);
        // 设置作者的id
        ApAuthor apAuthor = authorMapper.selectOne(Wrappers.<ApAuthor>lambdaQuery()
                .eq(ApAuthor::getName, apArticle.getAuthorName()));
        if (apAuthor == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        apArticle.setAuthorId(apAuthor.getId().longValue());

        if (articleDto.getId() == null) {  // 保存

            // 普通文章
            apArticle.setComment(0);
            apArticle.setViews(0);
            apArticle.setCollection(0);
            apArticle.setLikes(0);
            // 保存
            save(apArticle);  // 返回ID

            //2 保存article_config 数据
            ApArticleConfig apArticleConfig = new ApArticleConfig();
            apArticleConfig.setIsForward(true);
            apArticleConfig.setIsComment(true);
            apArticleConfig.setIsDown(false);
            apArticleConfig.setIsDelete(false);
            // 文章id
            apArticleConfig.setArticleId(apArticle.getId());
            apArticleConfigMapper.insert(apArticleConfig);

            //3 保存文章article_content 数据
            ApArticleContent apArticleContent = new ApArticleContent();
            apArticleContent.setContent(articleDto.getContent());
            // 文章ID
            apArticleContent.setArticleId(apArticle.getId());
            apArticleContentMapper.insert(apArticleContent);


        }else { // 修改

            // 查询文章
            ApArticle article = getById(articleDto.getId());
            if (article == null) {
                log.info("ApArticle getById is null: {}", articleDto.getId());

                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
            }

            // 修改 apArticle
            updateById(apArticle);

            // 修改 apArticleContent
            ApArticleContent articleContent = apArticleContentMapper.selectOne( Wrappers.<ApArticleContent>lambdaQuery()
                    .eq(ApArticleContent::getArticleId,articleDto.getId() ));
            if (articleContent == null) {
                log.info("articleContent getById is null: {}", articleDto.getId());
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
            }
            articleContent.setContent(articleDto.getContent());
            apArticleContentMapper.updateById(articleContent);

        }
        //导入数据到es索引库  发送消息
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("id", apArticle.getId().toString());
        map.put("publishTime", apArticle.getPublishTime());
        map.put("layout", apArticle.getLayout());
        map.put("images", apArticle.getImages());
        map.put("authorId", apArticle.getAuthorId());
        map.put("title", apArticle.getTitle()); kafkaTemplate.
                send(ArticleConstants.ARTICL_ES_SYNC_TOPIC, JSON.toJSONString(map));

        //4 返回结果  文章保存后的主键 ID
        return ResponseResult.okResult(apArticle.getId());
    }

    /**
     * 根据参数加载文章列表
     *
     * @param loadtype 1为加载更多  2为加载最新
     * @param dto
     * @return
     */
    private static final int MAX_PAGE_SIZE = 50;
    @Autowired
    ApArticleMapper apArticleMapper;


    @Override
    public ResponseResult load(Short loadtype, ArticleHomeDto dto) {
        if(dto==null){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //获取页数
        Integer size = dto.getSize();
        if (size==null||size<=0){
            size=10;
        }
        size=Math.min(size,MAX_PAGE_SIZE);
        dto.setSize(size);
        //获取频道
        if (StringUtils.isBlank(dto.getTag())){
            dto.setTag(ArticleConstants.DEFAULT_TAG);
        }
        //获取时间
        if (dto.getMaxBehotTime()==null){
            dto.setMaxBehotTime(new Date());
        }
        if (dto.getMinBehotTime()==null){
            dto.setMinBehotTime(new Date());
        }
        //获取状态
        if (!loadtype.equals(ArticleConstants.LOADTYPE_LOAD_MORE)
                &&!loadtype.equals(ArticleConstants.LOADTYPE_LOAD_NEW)){
            loadtype=ArticleConstants.LOADTYPE_LOAD_MORE;
        }
        //查询
        List<ApArticle> apArticles = apArticleMapper.loadArticleList(dto, loadtype);
        ResponseResult result = ResponseResult.okResult(apArticles);
        result.setHost(webSite);
        return result;
    }

    /**
     * 加载文章详情
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult loadArtilceInfo(ArticleInfoDto dto) {
        //检查参数
        if (dto==null||dto.getArticleId()==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        Long id = dto.getArticleId();
        //查询文章配置config
        ApArticleConfig articleConfig = apArticleConfigMapper
                .selectOne(Wrappers
                        .<ApArticleConfig>lambdaQuery()
                        .eq(ApArticleConfig::getArticleId, id));
        if (articleConfig==null||articleConfig.getIsDown()
        ||articleConfig.getIsDelete()){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章已下架");
        }
        //查询文章内容
        ApArticleContent articleContent = apArticleContentMapper
                .selectOne(Wrappers
                        .<ApArticleContent>lambdaQuery()
                        .eq(ApArticleContent::getArticleId, id));
        if (articleContent==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章不存在");
        }
        //返回结果
        HashMap<Object, Object> map = new HashMap<>();
        map.put("config",articleConfig);
        map.put("content",articleContent);
        return ResponseResult.okResult(map);
    }

}